Custom seals

Theory of sealing

Our Company

Zhejiang Broad Science And Technology Co.,Ltd(Zhejiang Sanmen Seal Factory) was founded in 1985 and has been manufacturing sealing products for more than 20 years. With profound technical foundation and abundant production experience, Sanmen Broad Industrial Co., LTD has developed its own brand of ‘Ailate’, which enjoys a good reputation in both domestic and overseas market.

Our factory covers an area of 25,000 m2 with 20,000m2 as workshop and is able to produce 60 million pieces seals every year. During 2006, factory’s workforce rose to more than 230 employees, including 15 technicians and 5 senior engineers. Furthermore, our factory possesses of complete processing facility and precise instrument & equipment, which is mostly purchased from Germany and is in leading position all over the world.

From 1995, we started to introduce technology, material and formula from Germany, USA and Japan so that we became the largest manufacturer of sealing products in China in 1998. In addition, we have established long-term cooperation with several scientific organizations and high college laboratories to keep our factory one-up ...